Having dominant follicles on both sides usually has the possibility of expelling them at the same time, or only one dominant follicle may be expelled, which needs to be analyzed on a case-by-case basis. Dominant follicles are those that are more than 10mm on ultrasound, and only the dominant follicle will be expelled each time you ovulate. Generally, ovulation occurs alternately. Even if the ultrasound detects dominant follicles on both sides of the body, it is possible that only one follicle will eventually be expelled, and the other one may stop developing and shrink. However, in some people, the follicles are not regular and may be released on both sides, which may result in twins. To determine if both dominant follicles will be released at the same time, it is necessary to seek medical attention for follicular monitoring, which is continuous ultrasound monitoring of follicular development and whether or not the follicles are being released.